17. Temperature, Pressure, Level, Flow, and Weight Measurement


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Industrial automation is not only about starting motors, reading sensors, or turning outputs ON and OFF.

Many machines and processes need to measure real physical values.

Examples:

Temperature = 180°FPressure = 72 PSITank …

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16. Analog Signals: 4–20 mA, 0–10 VDC, and PLC Scaling


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In industrial automation, not every signal is simply ON or OFF.

Some devices need to send a real measurement to the PLC.

Examples:

Pressure = 72.5 PSITank Level = 63%Temperature = 180°FFlow = …

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